Grey Seal Census for North Wales 2001

The grey seal, Halichoerus grypus, is relatively uncommon globally with estimates of 300,000 individuals across the north Atlantic in 2000. In the British Isles, the grey seal is more common that other species of seal breeding. This dataset contains the results of a full census of grey seal pup production in North Wales for the 2001 season. The aim of this project was to undertake an appropriate level of survey of grey seals in North Wales, from Aberystwyth to the Dee Estuary, in order to lead to a clearer understanding of the abundance and distribution of grey seals and pup production, and thereby to guide management. The objectives were to: - Locate and document all major sites where grey seal haul out for moulting and breeding, - Confirm the timing and extent of the breeding season - Locate and document all breeding sites in North Wales - Count the number of pups at each of these sites at regular intervals throughout that breeding season in 2001, in order to estimate pup production - Continue the daily pupping census of Bardsey Island - Take photographs of profiles to identify pelage markings of individuals for possible computer-aided matching in the future - Identify areas where seals are subject to disturbance by humans - Assess the quality of breeding haul-out environment - Advise on appropriate levels of monitoring / surveillance.

Identification

Identifier
NRW_DS115625
Alternative Title
  • The distribution of Grey Seals (Halichoerus grypus) and census of pup production in North Wales 2001
Metadata Language
English
Lineage

INFORMATION WARNING: The dataset within this dataset are wrong. The dates are incorrectly coded as 2010 instead of 2001. The coasts surveyed lie between Aberystwyth in the south to the Dee estuary in the east and includes the coast of Anglesey. In addition to this the coasts of all island adjacent to these coasts are also included. The coastline was split into six sections, The Penrhyn Llyn, Ynys Enlli, Ynys Mon West, Ynys Mon East, Great Orme and Little Orme, The Dee Esturary. On foot surveys were conducted. Wave ski surveys were conducted to reach offshore environments in a more or less silent way, thereby minimising the prospect of causing disturbance to the seals. Sites which were even further offshore or in particularly exposed areas where tidal races occurred, were accessed via boat.
Dataset Reference Date (Publication)
2002-12-31
Owner
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Originator
  Countryside Council for Wales (CCW)
Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW
http://naturalresourceswales.gov.uk/splash?orig=/
 

Extent

Extent

Geographic Extent
Wales (WLS)
N
W
E
S
Map representing the geographic extent of the dataset


 

Vertical Extent

Medin Extent Keyword

unknown
 
 

Distribution

Format Type and Description
  • Documents ()

    Specification

    Excel spreadsheets for all sites available.

 

Quality

Data quality

Quality Scope
Dataset
Conformity
Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
Explanation
Degree
false
Lineage

INFORMATION WARNING: The dataset within this dataset are wrong. The dates are incorrectly coded as 2010 instead of 2001. The coasts surveyed lie between Aberystwyth in the south to the Dee estuary in the east and includes the coast of Anglesey. In addition to this the coasts of all island adjacent to these coasts are also included. The coastline was split into six sections, The Penrhyn Llyn, Ynys Enlli, Ynys Mon West, Ynys Mon East, Great Orme and Little Orme, The Dee Esturary. On foot surveys were conducted. Wave ski surveys were conducted to reach offshore environments in a more or less silent way, thereby minimising the prospect of causing disturbance to the seals. Sites which were even further offshore or in particularly exposed areas where tidal races occurred, were accessed via boat.
 

Keywords

Keywords

GEMET - INSPIRE themes, version 1.0
Type
Theme

Citation

Date (Publication)
2008-06-01
Code
geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus
  • census
  • seal breeding census
  • grey seals
  • halichoerus grypus
  • seals (see also specific species)
  • pinnipedia (pinnipeds)
Type
Theme

Citation

Date (Publication)
2023-12-31
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords

Keywords

SeaDataNet Parameter Discovery Vocabulary
  • Seal behaviour
  • Seal abundance
  • Seal reproduction
  • Habitat extent
  • Seal morphology and physiology
Type
Theme

Citation

Date (Revision)
2021-01-06
Code
geonetwork.thesaurus.external.theme.rdf+xml

Keywords

NRW SMNR Vocabulary
  • Sustainable Management of Natural Resources (SMNR)
  • Animals, Plants and Other Organisms (SMNR)
  • Natural Resources (incl. Features and Processes) (SMNR)
  • Marine (SMNR)
Type
Theme

Citation

Date (Revision)
2023-12-27
Code
geonetwork.thesaurus.local.theme.converted_nrw-smnr-keywords
 

Spatial Reference System

Code
British National Grid (EPSG::27700)
 

Content

Content Information

NRW Profile

Custom Elements

NRW Related Title

The distribution of grey seals (halichoerus grypus) and census of pup population in North Wales 2001
 

Constraints

Constraints

Limitations on Public Access and Use

Restriction type
Other restrictions
 

Access Constraints Directive

Limitations
no limitations
 

Access Constraints Text

Other constraints

There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
 

Use Constraints

Use constraints type
Other restrictions
Other constraints

© CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose.
 
 
 

Metadata

Metadata

File Identifier
4f4c4942-4343-5764-6473-313135363235 XML
Metadata Language
English
Resource type
Dataset
Metadata Date
2024-05-31T09:38:32.875Z
Metadata Standard Name
NRW
Metadata Standard Version

1.0

pointOfContact
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
 
 

Publishing Body

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